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* fhandler.h (MAX_PARTITIONS): New definition.

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(class fhandler_dev_floppy): Add partitions array member.  Add close
	method.
	* fhandler_floppy.cc (fhandler_dev_floppy::fhandler_dev_floppy): Zero
	out partitions array.
	(fhandler_dev_floppy::open): Fix "entire disk" condition for call to
	DeviceIoControl (FSCTL_ALLOW_EXTENDED_DASD_IO).
	When opening disks for writing, call DeviceIoControl (FSCTL_LOCK_VOLUME)
	on all affected disk partitions starting with Vista.
	(fhandler_dev_floppy::close): New method.
	(fhandler_dev_floppy::dup): Duplicate handles in partitions, if any.
	* wincap.h (wincaps::has_restricted_raw_disk_access): New element.
	* wincap.cc: Implement above element throughout.
This commit is contained in:
Corinna Vinschen
2011-01-11 14:50:45 +00:00
parent 5837aa428f
commit 95a5c969ab
5 changed files with 112 additions and 7 deletions
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6
winsup/cygwin/fhandler.h
View File

@ -1,7 +1,7 @@
/* fhandler.h
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
2005, 2006, 2007, 2008, 2009, 2010 Red Hat, Inc.
2005, 2006, 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
This file is part of Cygwin.
@ -687,11 +687,14 @@ class fhandler_dev_raw: public fhandler_base
void fixup_after_exec ();
};
#define MAX_PARTITIONS 15
class fhandler_dev_floppy: public fhandler_dev_raw
{
private:
_off64_t drive_size;
unsigned long bytes_per_sector;
HANDLE partitions[MAX_PARTITIONS];
struct status_flags
{
unsigned eom_detected : 1;
@ -711,6 +714,7 @@ class fhandler_dev_floppy: public fhandler_dev_raw
fhandler_dev_floppy ();
int open (int flags, mode_t mode = 0);
int close ();
int dup (fhandler_base *child);
void __stdcall raw_read (void *ptr, size_t& ulen);
ssize_t __stdcall raw_write (const void *ptr, size_t ulen);